Search Content | Science News

SCIENCE NEWS NEEDS YOU

Support nonprofit journalism

Subscribe now

Search Content

E.g., 03/26/2019
E.g., 03/26/2019
Your search has returned 768 images:
  • person sleeping
  • sperm heading for an egg
  • older man exercising
Your search has returned 945 articles:
  • News in Brief

    Epileptic seizures may scramble memories during sleep

    SAN FRANCISCO — Seizures during sleep can scramble memories — a preliminary finding that may help explain why people with epilepsy sometimes have trouble remembering.

    The sleeping brain normally rehashes newly learned material, a nocturnal rehearsal that strengthens those memories. Neuroscientist Jessica Creery and her colleagues forced this rehearsal by playing certain sounds while nine...

    03/26/2019 - 13:47 Health, Neuroscience
  • News

    Sperm with damaged DNA may cause some repeat miscarriages

    NEW ORLEANS — For couples who have suffered repeated miscarriages, it may be useful to scrutinize the man’s reproductive health as closely as the woman’s. Some miscarriages may be linked to abnormalities in semen, a study finds.  

    Researchers analyzed semen from 49 men whose partners had lost three or more consecutive pregnancies before the 20-week mark. The men had sperm with more than...

    03/26/2019 - 10:43 Health
  • News

    A single sweaty workout may boost some people’s memory

    SAN FRANCISCO — For some older people, the brain boosts from exercise can be almost immediate. Improvements in their thinking abilities after a single 20-minute bout of pedaling a stationary bike mirrored those produced by three months of regular exercise, according to a preliminary study presented March 24 at the annual meeting of the Cognitive Neuroscience Society. 

    In addition to...

    03/26/2019 - 06:00 Health, Neuroscience
  • News

    Edibles are tied to more severe health issues than smoking marijuana

    After Colorado voted to legalize marijuana in 2012, doctors in Denver noticed a surprising trend. Most people who visited the emergency room for cannabis-related complaints had smoked the drug. But those who ingested the drug were more likely to suffer more severe effects, including psychiatric symptoms and heart problems.

    Edibles — marijuana-laced products such as brownies, cookies and...

    03/25/2019 - 17:25 Health
  • News

    Signs of new nerve cells spotted in adult brains

    A tweaked laboratory protocol has revealed signs of thousands of newborn nerve cells in the brains of adults, including an octogenarian. 

    These immature neurons, described online March 25 in Nature Medicine, mark the latest data points in the decades-old debate over whether people’s brains churn out new nerve cells into adulthood. The process, called neurogenesis, happens in the brains...

    03/25/2019 - 12:00 Health, Neuroscience
  • Science Visualized

    U.S. fentanyl deaths are rising fastest among African-Americans

    Since people in the United States began dying in the fentanyl-related drug overdose epidemic, whites have been hit the hardest. But new data released March 21 by the Centers for Disease Control and Prevention show that African-Americans and Hispanics are catching up.

    Non-Hispanic whites still experience the majority of deaths involving fentanyl, a synthetic opioid. But among African-...

    03/22/2019 - 13:17 Health
  • News

    Saving monkey testicle tissue before puberty hints at a new way to preserve fertility

    A technique with the potential to preserve fertility for prepubescent boys stricken with cancer has passed a key test in experiments conducted in monkeys: the birth of a healthy infant.

    Testicle tissue samples from rhesus macaques that hadn’t reached puberty were removed, frozen and then grafted back onto the monkeys. Over the following year, as the monkeys went through puberty, the...

    03/21/2019 - 14:26 Health
  • News

    A new ketamine-based antidepressant raises hope — and questions

    With great fanfare, a new antidepressant entered the U.S. market in March, the first fundamentally new medicine for depression in decades. Based on the anesthetic ketamine, the drug — called Spravato — is intended to help people with severe depression quickly, taking effect within hours or days instead of the weeks that typical antidepressants take. But for all the hubbub, big questions have...

    03/21/2019 - 07:00 Health, Neuroscience
  • News in Brief

    U.S. heart attack mortality reached a two-decade low in 2014

    Heart-healthy changes to diet and exercise along with a national focus on improving treatment and recovery from heart attacks appears to be making a difference.

    Fewer older adults are having heart attacks, and fewer of those who do die as a result, according to an analysis of more than 4.3 million U.S. Medicare patients that spanned two decades up to 2014.

    The percentage of...

    03/15/2019 - 11:30 Health
  • News

    Flickers and buzzes sweep mouse brains of Alzheimer’s plaques

    Fast clicking sounds can boost brainpower in mice with signs of Alzheimer’s disease. Like flickering lights, these external sounds spur a type of brain wave that seemed to sweep disease-related plaques from mice’s brains, researchers report in the March 14 Cell.It’s too early to say whether the same sorts of flickers and clicks could help people with Alzheimer’s. If so, the treatment would...

    03/14/2019 - 11:00 Health, Neuroscience